RFR: 8344149: Remove usage of Security Manager from java.rmi

[Aleksei Efimov]

On Mon, 18 Nov 2024 17:55:31 GMT, Aleksei Efimov <aefimov at openjdk.org> wrote:

>> First cut at removal of Security Manager stuff from RMI.
>> 
>> This covers just about every SM-related case in RMI, except for a bit of package checking in MarshalInputStream. This will be handled separately. It's covered by [JDK-8344329](https://bugs.openjdk.org/browse/JDK-8344329).
>> 
>> Further simplifications could be done in RuntimeUtil and NewThreadAction. However, those changes started to become somewhat more intrusive than I'd like for this PR, which is focused on removing security-related stuff.
>
> src/java.rmi/share/classes/sun/rmi/server/MarshalInputStream.java line 69:
> 
>> 67: 
>> 68:     /** table to hold sun classes to which access is explicitly permitted */
>> 69:     protected static Map<String, Class<?>> permittedSunClasses
> 
> It looks like `permittedSunClasses` map can be removed alongside to `checkSunClass(String, AccessControlException)` method, since it is only called on [line 198](https://github.com/openjdk/jdk/pull/22129/files#diff-491ee160d740152081c000fc513091e00181c41fd3c423c466fd30448a2a47e6R198):
> 
> } catch (@SuppressWarnings("removal") AccessControlException e) {
>      return checkSunClass(className, e);

Sorry, missed your comment in a PR description - ignore the comment above

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PR Review Comment: https://git.openjdk.org/jdk/pull/22129#discussion_r1847038115